Dwelling       Sample Collection   Code Age [years] Type Level in Building Location in Dwelling Area [m2], Type DH2 10 Detached House 2nd floor Entrance 0.75 × 0.50, carpet         Living room 1.00 × 1.00, carpet A2 5 Apartment 2nd floor Entrance 0.91 × 0.60, carpet         Living room 1.00 × 1.00, carpet DH3 30 Detached House Ground floor Entrance (inside) 2.00 × 2.00, carpet         Living room 2.00 × 2.00, carpet DH4 15 Detached House Ground floor Entrance (inside) 0.60 × 0.60, carpet         Living room 2.00 × 2.00, carpet A3 4 Apartment 1st floor Entrance (inside) 1.00 × 0.50, carpet         Living room 2.00 × 2.00, carpet A4 3 Apartment 2nd floor Entrance (inside) 2.00 × 2.00, bare floor         Living room 2.00 × 2.00, carpet DH5 40 Detached House Ground floor Entrance (inside) 2.00 × 2.00, carpet         Living room 2.00 × 2.00, carpet H 10 House Ground floor Entrance 1.00 × 1.00, bare floor         Living room 2.00 × 2.00, bare floor

Table 1: Features of the dwellings and floor, where the dust samples were collected.